Home / 3,772.75-5,206.40-2,116.75

Finding the Fourth Proportional to 3,772.75, 5,206.40 and 2,116.75

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Solution

The fourth proportional to 3,772.75, 5,206.40 and 2,116.75 is: 2,921.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.75 : 5,206.40 = 2,116.75 : x
  2. Step 2: Convert to fraction form
    3,772.75/5,206.40 = 2,116.75/x
  3. Step 3: Cross multiply
    3,772.75x = 5,206.40 × 2,116.75
  4. Step 4: Simplify right side
    3,772.75x = 11,020,647.20
  5. Step 5: Solve for x
    x = 11,020,647.20/3,772.75
  6. Step 6: Final answer
    x = 2,921.12

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.